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Introduction
The open-source automation ecosystem continues to expand rapidly, and with that growth comes an increasing attack surface. One of the most widely used workflow orchestration tools, n8n, has now been found to contain multiple high-severity security flaws that could allow authenticated attackers to execute remote code or access sensitive files on affected servers.
These vulnerabilities are not minor configuration issues. They sit deep inside core nodes used for automation workflows and can potentially compromise entire enterprise environments where n8n is deployed. Given its integration with APIs, databases, and internal services, the impact extends far beyond the platform itself.
Summary of the Original Security Disclosure
Three critical vulnerabilities were recently disclosed in n8n affecting all versions below 1.123.43, 2.20.7, and 2.22.1.
The issues were published in separate GitHub Security Advisories by maintainer Jubke and carry maximum severity ratings under CVSS 3.1 and CVSS 4.0.
Security researchers warn that exploitation could lead to remote code execution or arbitrary file access on the host system.
Organizations using self-hosted instances are strongly advised to prioritize immediate patching due to the platform’s deep integration with internal infrastructure.
Earlier in 2026, n8n had already faced critical RCE chains involving expression sandbox escapes and unauthenticated form evaluation, which raised concerns about systemic security weaknesses.
The first vulnerability, CVE-2026-44789, exists in the HTTP Request node and allows prototype pollution through manipulated pagination parameters.
This flaw can be chained into full remote code execution when combined with additional attack techniques.
The second vulnerability, CVE-2026-44790, affects the Git node Push operation and allows CLI argument injection.
Attackers exploiting this issue can read sensitive files such as credentials, environment variables, and private keys.
The third vulnerability, CVE-2026-44791, is a patch bypass that reopens previously fixed prototype pollution issues in the XML node.
This demonstrates that earlier fixes were incomplete and can still be exploited via alternative code paths.
All three vulnerabilities share a low-complexity attack profile requiring only authenticated access.
Two additional issues were also disclosed, including SQL injection in data table imports and OAuth token overwrite flaws.
Mitigation requires upgrading to patched versions or disabling affected nodes via environment configuration.
Security experts emphasize that workflow automation platforms remain high-value targets due to privileged system access.
What Undercode Say:
The discovery of multiple critical vulnerabilities in n8n highlights a recurring pattern in modern automation tooling security.
Workflow platforms are becoming central nervous system components in enterprise infrastructure.
This makes them extremely attractive targets for attackers seeking lateral movement.
The most concerning aspect is not just the presence of RCE-level bugs.
It is the combination of prototype pollution and command injection across different nodes.
These are architectural issues, not isolated coding mistakes.
Prototype pollution continues to appear in JavaScript-based automation systems.
It often indicates insufficient input sanitization at object level structures.
When chained with workflow execution logic, it becomes highly exploitable.
The Git node vulnerability shows how dangerous CLI abstraction layers can become.
By exposing command parameters directly, systems unintentionally create injection surfaces.
The XML node patch bypass is even more significant.
It proves that previous remediation attempts were incomplete.
Attackers only need to find alternative data paths to reintroduce old vulnerabilities.
This is a strong signal of systemic design weaknesses.
The requirement for authenticated access reduces exposure slightly.
However, internal attackers or compromised accounts remain a major threat.
In enterprise environments, authentication boundaries are often weakly enforced.
Many automation tools are deployed with overly broad permissions.
This increases blast radius significantly when exploited.
The CVSS vector indicates low attack complexity and high impact.
That combination is typically associated with rapid exploitation in real-world scenarios.
Organizations relying heavily on n8n for business logic automation are especially exposed.
The SQL injection issue in data imports adds another dimension of risk.
It suggests that multiple subsystems lack consistent validation standards.
OAuth token overwrite vulnerabilities further expand attack possibilities.
Credential integrity becomes a serious concern in shared environments.
Overall, this is not a single vulnerability incident.
It is a pattern of repeated architectural weaknesses.
Security teams should treat workflow automation platforms as critical infrastructure.
Continuous monitoring and strict permission segmentation are essential.
Reliance on patching alone may not be sufficient in the long term.
Fact Checker Results
✅ The vulnerabilities are confirmed to affect multiple n8n versions below the patched releases
❌ All issues require only authenticated access, but external unauthenticated entry is not described in the report
⚠️ CVSS scores indicate high severity, but real-world exploitation depends on deployment configuration and access controls
Prediction
The repeated discovery of RCE chains suggests future exploits targeting workflow automation platforms will become more frequent 🔴
Attackers are likely to focus on chaining minor node-level flaws into full system compromise 🔴
Enterprises using n8n at scale will likely prioritize isolation and permission hardening over rapid feature expansion 🔴
🕵️📝Let’s dive deep and fact‑check.
References:
Reported By: cyberpress.org
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